12964431479 has 4 divisors (see below), whose sum is σ = 12965998584. Its totient is φ = 12962864376.

The previous prime is 12964431391. The next prime is 12964431499. The reversal of 12964431479 is 97413446921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12964431479 - 2²⁴ = 12947654263 is a prime.

It is a super-2 number, since 2×12964431479² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12964431499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771077 + ... + 787710.

It is an arithmetic number, because the mean of its divisors is an integer number (3241499646).

Almost surely, 2^12964431479 is an apocalyptic number.

12964431479 is a deficient number, since it is larger than the sum of its proper divisors (1567105).

12964431479 is an equidigital number, since it uses as much as digits as its factorization.

12964431479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567104.

The product of its digits is 1306368, while the sum is 50.

The spelling of 12964431479 in words is "twelve billion, nine hundred sixty-four million, four hundred thirty-one thousand, four hundred seventy-nine".